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EngadgetApr 21, 2026
Mozilla says it patched 271 Firefox vulnerabilities thanks to Anthropic's Claude Mythos
Anthropic's buzzy announcement about using AI to improve cybersecurity earlier this month was met with plenty of skepticism. However, Mozilla shared some details that support use of the company's special Claude Mythos Preview model as a way to protect critical services. Using Mythos helped Mozilla's team find and patch 271 vulnerabilities in the latest release of the Firefox browser. "So far we've found no category or complexity of vulnerability that humans can find that this model can't," the foundation said.

The blog post from Mozilla feels like a positive sign for Anthropic's Project Glasswing. Obviously the AI company would want to put itself in the best possible light while presenting its own initiative, but there's something encouraging about hearing the benefits from a third party. Mozilla also noted that in its time with Claude Mythos, the AI wasn't able to turn up any bugs that a human wouldn't have been able to find, given enough time and resources, which indicates that AI isn't presently able to do more to crack cybersecurity protections than a person can.

An organizaion successfully using AI for good is certainly a refreshing change of pace in tech news. And for those Firefox users who aren't personally interested in applying any generative AI in their browsing, Mozilla has given the option to turn it all off for the past several months.

This article originally appeared on Engadget at https://www.engadget.com/ai/mozilla-says-it


Mac RumorsApr 21, 2026
Tim Cook Says He's 'Healthy,' Plans to Remain at Apple 'for a Long Time'
Tim Cook today told employees he plans to be at Apple "for a long time" in his new role as executive chairman. Cook shared the information in an all-hands meeting detailed by Bloomberg.


EngadgetApr 21, 2026
YouTube is muting push notifications from channels you don't watch


YouTube notifications can get messy fast, particularly if you're subscribed to a lot of different channels. To address that, today the company will begin muting push notifications from creators that you haven't engaged with in the last month.

The change to YouTube notifications began as a small trial the company tested out earlier this year. The idea behind it is that if a viewer continually receives notifications about content they don't engage with, this may eventually cause the user to disable YouTube notifications altogether. Now obviously, this is bad for YouTube. Turning off notifications means people will use the platform less, thereby resulting in lower revenue. However, it's also bad for content creators, especially the ones you do like, who will have one fewer avenue to keep you updated about new and upcoming videos. 

So starting today, for channels that you have subscribed to and have notifications set to "all," YouTube will no longer send out push notifications to mobile devices from creators that you haven't interacted with for one month. That said, these notifications will continue to be available inside the YouTube app in your inbox (the little bell icon in the top right). 

Notably, for those who are clicking on notifications and watching related videos, nothing will change. Additionally, based on info from the test earlier this year, YouTube said "channels that upload infrequently will not have their notification

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